139791560449 has 2 divisors, whose sum is σ = 139791560450. Its totient is φ = 139791560448.

The previous prime is 139791560423. The next prime is 139791560479. The reversal of 139791560449 is 944065197931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101978035600 + 37813524849 = 319340^2 + 194457^2 .

It is a cyclic number.

It is not a de Polignac number, because 139791560449 - 2³⁵ = 105431822081 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139791560393 and 139791560402.

It is not a weakly prime, because it can be changed into another prime (139791560479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69895780224 + 69895780225.

It is an arithmetic number, because the mean of its divisors is an integer number (69895780225).

Almost surely, 2^139791560449 is an apocalyptic number.

It is an amenable number.

139791560449 is a deficient number, since it is larger than the sum of its proper divisors (1).

139791560449 is an equidigital number, since it uses as much as digits as its factorization.

139791560449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7348320, while the sum is 58.

The spelling of 139791560449 in words is "one hundred thirty-nine billion, seven hundred ninety-one million, five hundred sixty thousand, four hundred forty-nine".